Elevator



July 6, 1926. 1,591,545

C. W. OLD

ELEVATOR Filed April l29, 1925 2' Sheets-sheet 1 Patented July 6, 1926 UNITED STATES PATENT OFFICE.

CLAYTON W. OLI), OF MNTCLAIR, NEW JERSEY, ASlJGrNOR T0 SHUR LOC ELEVATOR SAFETY COMPANY, TNC., OI? NEW YORK, N. Y., A CRPORATION OF NEW YORK.

ELEVATOR.

Application filed April 29, 1925. Serial No. 26,571.

In an application ol' Glenn S. lVilliainson, Serial No. 568,396, filed .lune 15, 1922, there is shown and described a mechanism 'for the operation oi the shaft doors of an elevater in which a normally retracted device on the car is adapted to be moved into tended operative position with respect to the door to be moved and .is then moved bodily to move the door. The movement of the normally retracted device to extendedposi^ tion is e'lected by the movement of the con troller lever of the car and in order to guard against the opening oi" the door when tl e controlling lever is not in its neutral posi-- tion, and the car is therefore `capable ot movement, there is provided a mechanical interconnection between the controlling lever and the moving means such that the retraeted device cannot be moved to extended position while the controlling lever is out of normal position. Under some conditionsl ot use of the elevator it may be desirable to prevent the movement ol the ear whenever the door operating device is moved from its normally retracted position, regardless ol. the position of the controlling lever of the car. It is the purpose of this invention to provide means whereby this result can be accomplished and in accordance therewith the movement of the door operating device `from its normally retracted position is made to ellect interruption or the ear operating means whatever may be the position oit' the controlling' lever of the car. In the prelerred embodiment ol the invention. the movement of the door operating device trom its normally retracted position is made to open a switch `so placed in the electrical connections through which the movement ot the car is controlled, as to prevent the applieation o'l power to move the car. The invention will be more fully explained here-- inatter with reference to the accompanying drawings in which it is illustrated and in whichy Figure 1 is a view in liront elevation, partly broken away, showing a portion of an elevator car and of a sha'lt door and the devices for effecting and controlling the movement of the shaft door.

Figure 2 is a view in elevation seen from the right hand in Figure 1, with some of the electrical connections indicated schematically.

Figure 3 is a detail view ot some of the parts shown in Figure 1, other parts being omitted ttor the salte of clearness.

Figure 4l; is a schematic view indicatin some of the electrical connections.

Figure 5 is a schematic view illustrating a suitable arrangement of devices for effecting and controlling the movement of' the elevatorI car.

In the drawings there is shown at a a portion ot' the trame or body of an elevator car of ordinary construction, the fioor be ing indicated at a. .As indicated schematically in Figure 5 the car may be raisediand lowered through the medium of a cable fr which passes over suitable guides w, and is secured to a drum .r3 operated by a motor a"l which receives current through a controller brrr 'which is electrically comiectM ed as by a cable w, with control devices mounted on the ear and including a con troller bon; a with i handle ed, a cutlout switch e5, to be operated by hand when necessary, and a second cutout switch a to be operated in the movement of the door operating device hereinafter reiferred to. It will be understood that the electrical devices through which movement of the car is controlled may be constructed and arranged as may be preferred, the present invention not being concerned with the particular construction and arrangement thereof.

rit each i'loor or shalt landing there is i` suitable door o whiclji is nn'rvable horizontal ly to open or to close the sha'it openingi and is conveniently shown here as n collapsible gate, although in practice it is usually a sliding door. 'lho door operating devices nlay also he, constructed and avrai red as pre -ieri-ed. except as heroinalftm indir-ated.` and 'lor conveniencia they are illustrated as in the application o i llilwood tl llrinher and .lohn lit. Haviland, llo. llhlli'i, tiled lvliaieh Si), 1925. ris therein shown, the power devices are actuated by compressed air troni a tanti c on the car, the air being conducted to the power devices through a pipe e which is connected to a 'tour-way valve c under the control oll the operator for the purpose oi enabling him to direct the delivery o' air through one or the other oi" two branch pipes et, e, to one or the other ot two power cylinders f, j mounted on the car, the one ein hausting as the other is charged with air under pressure to move the door in the de sired direction. The pistons oi the two lOfi whicn 1 gli chains g rinnovi is i y. iarted to l ted t be opera e crea device or med that not coll or to be nio t d the door vertical axes from the ietnctedor ini operative position, theV two, shoes being spacedlapa "when in operative positiom'so aste reeeii e between thenithe enacting des vice or devices lenthe, shaft "door, as shown at Z2. i'rmsA on the shoesfi2 are, provided with rollers lit for contact with a liar hich'ishung by pivotedarins z'" from' v ipportin ori; on top oil the car and is adapt c stung from its` norml,

ino'perative1 osi/tion, to itsopei tive position 'to ber inst the roll 1rs mi to canse theshoes/li2 to wing from their normal, in# operativeposition, to their operative post Y tion, against. the pressure ot springs, not

showminhieh hold the 4shoes normally in their inoperative positien. As the bai' or rod z', extent across the top the through# ont the length of travel ot' the Avvaveler /z it will, whilefin its Yoperative position, hold the shoes 72.2 in their" owiierati'vev posi'ion thronghont the movement thet'ravele lin the noy nal operatien lo iffthe elevator, thebar 'l ioved'to operative position at the initial movement of the rack bar f'bcitore that rack bar engages the gear g, by devicessuch as those described in said application Serial No. 19,255, but need notbe described herein since the present .invention is not*concernedtherewith. Tluder some con,- ditions oi: operation the bar a' n'i'ay be moved by other means, such as those described in said application and likewise not necessary to beexplained herein, So as the present invention is concerned, it is'only necessary thaty thereshall be on rthe ear normally retracted device, such as the shoes ft2, for example, adapted to be moved by some meansinto extended operative position with respect to thefdoor, provisionbeingmade, inV accord` ance withr the present, invention, whereby the movement oiflsucha device, .vhich is pre'- liminary to thegmovement ot a door, shall 'prevent meyementfof thei'car independently ol? 'the "controller handle gard toits' p'osition- TQ effect 'the Present purpose. there iS i11- clud'ed in some part( oi the 'electrical devices through which the movementof the car is c? and i without resi) l'. an dcontrolled, as in the branch circuit indicated at a", through which the input ol' power lo the car operating motor is controlled, a switch a6 which is operated with the movement 4o'th-e'door engaging device so `that when the door engaging device is moved to its extended or operative position, the switch shall be opened and the delivery of power` to the motor shall be prevented. A convenient means for controlling the switch may comprise an arm 2 connected with one of the supporting arms z" of the bar z' ior normally holding the switcher6 closed, as shown in Figure 3, but permitting the switch to` open when the bar z' is moved to move the door engaging device to operative position, as shownk in Figure 2. The switch is thus operated with the movement. of the normally retracted door engaging device, so that when the latter is in its normally retracted position current may b e supplied to the motor to operate the car, and when ythe door engaging device is moved to its extended or oper" ative position, preliminary to the movement of a door, the switch is openedl and current can no longer be supplied to the motor.

It will be understood that various changes in details ol construction and arrangement can be made to suit dili'erent conditions ot use and that, except as pointed out inthe claims, the invention is not restricted to the particular construction shown and described herein.`

I claim as my invention:

l. In an elevator, the combination ol a. door, a ear, electrical devices through which the movement of the car is controlled, said devices including a switch, a normally retracted device on the car adapted to be moved into extended operative position with respect to the door, pivoted arms, a bar mounted on the arms for moving said device to extended position, and means carried with one ot the arms whereby said switch is operated with the movement of said normally retracted device from its retracted position to prevent movement of the car.

2. Inl an elevator, the combination of a door, a car, electrical devices through which the movement oli-the car is controlled, said devices including a switch, a traveler, a normally retracted device supported by the traveler and adapted to be movedl into extended operativeposition with respect Ito the door, pivoted arms, a bar mounted on the arms :tor operating the travelenmeans i'or moving said device to extended position, and meanscarriedwith one ot' the arms whereby said switch is operatedv with the movement of said normally retracted device from its retractedposition to prevent movement of the car. y

vThis specilication signed this 28th day of April, A. D. 1925.

i' CLAYTON lV. OLD. 

